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(R) STPS140 POWER SCHOTTKY RECTIFIER Table 1: Main Product Characteristics IF(AV) VRRM Tj (max) VF(max) FEATURES AND BENEFITS 1A 40 V 150C 0.5 V SMA (JEDEC DO-214AC) STPS140A SMB (JEDEC DO-214AA) STPS140U Very small conduction losses Negligible switching losses Low forward voltage drop Surface mount miniature packages Avalanche capability specified DESCRIPTION Single chip Schottky rectifiers suited to Switched Mode Power Supplies and high frequency DC to DC converters. Packaged in SMA and SMB, this device is especially intended for surface mounting and used in low voltage, high frequency inverters, free wheeling and polarity protection applications. Table 3: Absolute Ratings (limiting values) Symbol Parameter VRRM Repetitive peak reverse voltage IF(RMS) RMS forward voltage IF(AV) IFSM IRRM IRSM PARM Tstg Tj dV/dt Average forward current SMA SMB TL = 130C = 0.5 TL = 135C = 0.5 tp = 10ms sinusoidal tp = 2s F = 1kHz square tp = 100s square tp = 1s Tj = 25C Value 40 7 1 60 1 1 900 -65 to + 150 150 10000 Unit V A A A A A W C C V/s Table 2: Order Codes Part Number STPS140A STPS140U Marking S140 G14 Surge non repetitive forward current Repetitive peak reverse current Non repetitive peak reverse current Repetitive peak avalanche power Storage temperature range Maximum operating junction temperature * Critical rate of rise of reverse voltage 1 dPtot * : --------------- > ------------------------- thermal runaway condition for a diode on its own heatsink dTj Rth ( j - a ) August 2004 REV. 8 1/7 STPS140 Table 4: Thermal Resistance Symbol Rth(j-l) Junction to lead Parameter SMA SMB Value 30 25 Unit C/W Table 5: Static Electrical Characteristics Symbol IR * Tests conditions Tj = 25C VR = VRRM Reverse leakage current Tj = 100C Tj = 25C VF ** Forward voltage drop Tj = 125C Tj = 25C Tj = 125C Pulse test: * tp = 5 ms, < 2% ** tp = 380 s, < 2% Parameter Min. Typ 0.25 0.43 0.53 Max. 12 2 0.55 0.45 0.65 0.6 Unit A mA IF = 1A IF = 2A V To evaluate the conduction losses use the following equation: P = 0.4 x IF(AV) + 0.10 IF (RMS) 2 Figure 1: Average forward power dissipation versus average forward current PF(AV)(W) 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 0.0 0.2 0.4 0.6 0.8 1.0 1.2 Figure 2: Average forward current versus ambient temperature ( = 0.5) IF(AV)(A) 1.2 = 0.05 = 0.1 = 0.2 = 0.5 1.0 SMA Rth(j-a)=100C/W S(CU)=1.5cm2 Rth(j-a)=Rth(j-I) =1 0.8 0.6 SMB Rth(j-a)=80C/W S(CU)=1.5cm2 0.4 T 0.2 T IF(AV)(A) =tp/T tp 0.0 0 =tp/T 25 tp 50 Tamb(C) 75 100 125 150 Figure 3: Normalized avalanche derating versus pulse duration PARM(tp) PARM(1s) 1 power Figure 4: Normalized avalanche derating versus junction temperature PARM(tp) PARM(25C) 1.2 1 power 0.1 0.8 0.6 0.01 0.4 0.2 0.001 0.01 0.1 1 tp(s) 10 100 1000 Tj(C) 0 25 50 75 100 125 150 2/7 STPS140 Figure 5: Non repetitive surge peak forward current versus overload duration (maximum values) (SMA) IM(A) 8 7 6 5 4 3 2 1 0 1E-3 1E-2 1E-1 1E+0 IM t Figure 6: Non repetitive surge peak forward current versus overload duration (maximum values) (SMB) IM(A) 8 7 6 Ta=25C 5 4 Ta=25C Ta=50C Ta=50C 3 2 1 0 1E-3 1E-2 1E-1 1E+0 Ta=100C IM t Ta=100C =0.5 t(s) =0.5 t(s) Figure 7: Relative variation of thermal impedance junction to ambient versus pulse duration (epoxy printed circuit board, e(Cu)=35m, recommended pad layout) (SMA) Zth(j-c)/Rth(j-c) 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 1E-2 1E-1 1E+0 = 0.2 = 0.1 Single pulse = 0.5 Figure 8: Relative variation of thermal impedance junction to ambient versus pulse duration (epoxy printed circuit board, e(Cu)=35m, recommended pad layout) (SMB) Zth(j-c)/Rth(j-c) 1.0 0.9 0.8 0.7 0.6 0.5 0.4 = 0.5 T 0.3 0.2 = 0.2 = 0.1 Single pulse T tp(s) =tp/T 1E+1 tp 1E+2 0.1 0.0 tp(s) 1E-1 1E+0 1E+1 =tp/T 1E+2 tp 1E+3 1E-2 Figure 9: Reverse leakage current versus reverse voltage applied (typical values) IR(A) 1E+3 Tj=125C Figure 10: Junction capacitance versus reverse voltage applied (typical values) C(pF) 200 F=1MHz Tj=25C 1E+2 Tj=75C 100 1E+1 50 1E+0 Tj=25C 20 1E-1 VR(V) 1E-2 0 5 10 15 20 25 30 35 40 VR(V) 10 1 2 5 10 20 50 3/7 STPS140 Figure 11: Forward voltage drop versus forward current (maximum values) Figure 12: Thermal resistance junction to ambient versus copper surface under each lead (Epoxy printed circuit board FR4, copper thickness: 35m) (SMA) Rth(j-a)(C/W) 140 P=1.5W IFM(A) 1E+1 Tj=125C 120 100 1E+0 80 60 1E-1 40 20 VFM(V) 1E-2 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 0 0 1 S(Cu)(cm) 2 3 4 5 Figure 13: Thermal resistance junction to ambient versus copper surface under each lead (Epoxy printed circuit board FR4, copper thickness: 35m) (SMB) Rth(j-a)(C/W) 120 P=1.5W 100 80 60 40 20 S(Cu)(cm) 0 0 1 2 3 4 5 4/7 STPS140 Figure 14: SMA Package Mechanical Data DIMENSIONS E1 REF. Millimeters Min. Max. 2.03 0.20 1.65 0.41 5.60 4.60 2.95 1.60 Inches Min. 0.075 0.002 0.049 0.006 0.189 0.156 0.089 0.030 Max. 0.080 0.008 0.065 0.016 0.220 0.181 0.116 0.063 D A1 A2 b 1.90 0.05 1.25 0.15 4.80 3.95 2.25 0.75 E c A1 E E1 b C L A2 D L Figure 15: SMA Foot Print Dimensions (in millimeters) 1.65 1.45 2.40 1.45 5/7 STPS140 Figure 16: SMB Package Mechanical Data DIMENSIONS E1 REF. Millimeters Min. Max. 2.45 0.20 2.20 0.41 5.60 4.60 3.95 1.60 Inches Min. 0.075 0.002 0.077 0.006 0.201 0.159 0.130 0.030 Max. 0.096 0.008 0.087 0.016 0.220 0.181 0.156 0.063 D A1 A2 b 1.90 0.05 1.95 0.15 5.10 4.05 3.30 0.75 E c A1 E E1 b C L A2 D L Figure 17: SMB Foot Print Dimensions (in millimeters) 2.3 1.52 2.75 1.52 6/7 STPS140 Table 6: Ordering Information Ordering type STPS140A STPS140U Marking S140 G14 Package SMA SMB Weight 0.068 g 0.107 g Base qty 5000 2500 Delivery mode Tape & reel Tape & reel Band indicates cathode Epoxy meets UL94, V0 Table 7: Revision History Date Jul-2003 Aug-2004 Revision 7 8 Last update. SMA package dimensions update. Reference A1 max. changed from 2.70mm (0.106inc.) to 2.03mm (0.080). Description of Changes Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners (c) 2004 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com 7/7 |
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